Abstract: An apparatus for forming an image is provided, in which a rotational member, such as a photoreceptor drum, is borne by using a rolling bearing assuring electric conduction between an inner ring and an outer ring by filling electroconductive grease. Rotation of a photoreceptor drum is borne by using a electroconductive rolling bearing having a resistance between the inner ring and the outer ring of about 15 k&OHgr; or less in terms of a maximum value and about 8 k&OHgr; or less in terms of an effective value under a dynamic condition, where a radial or thrust load acting between the inner ring and the outer ring is 10 N, and a relative difference in rotational velocity between the inner ring and the outer ring is 150 rpm, and the photoreceptor drum is rotated at about 75 rpm or more.

Abstract: An apparatus for forming an image is provided, in which a rotational member, such as a photoreceptor drum, is borne by using a rolling bearing assuring electric conduction between an inner ring and an outer ring by filling electroconductive grease. Rotation of a photoreceptor drum is borne by using a electroconductive rolling bearing having a resistance between the inner ring and the outer ring of about 15 k&OHgr; or less in terms of a maximum value and about 8 k&OHgr; or less in terms of an effective value under a dynamic condition, where a radial or thrust load acting between the inner ring and the outer ring is 10 N, and a relative difference in rotational velocity between the inner ring and the outer ring is 150 rpm, and the photoreceptor drum is rotated at about 75 rpm or more.

Abstract: A requester requesting the purchase of items specifies the requested person and the desired items to be purchased in a shopping request processing system (20). The request processing system (20) notifies the requested person of the details of the shopping request. This notification includes a request number identifying the request. When the requested person inputs the request number into a guide map provider (100) installed at a store (10), the provider (100) obtains a list of the requested items in the shopping request from the request processing system (20). By referring to a map information database (108) containing a department map of the store (10), the display location of each requested item is obtained and superimposed onto the department map to create a guide map, which is then printed out.